Workarround for the issue931. Not solve the issue but implement correctly the --disable-<plugin> option for all plugins

Remove 'glances_' prefix from filenames.

- First line should end with a period
- No blank lines allowed after function docstring
- 1 blank line required between summary line and description
- 1 blank line required before class docstring
- Multi-line docstring closing quotes should be on a separate line
- No whitespaces allowed surrounding docstring text
- One-line docstring should fit on one line with quotes
- Use r""" if any backslashes in a docstring

Convert former getcapacitypercent method to property.

- Remove unused import
- Fix double import
- Remove unnecessary pass statement
- Fix bad indentation
- Fix pointless statement

glances_globals <-> glances_logging

- fix help screen
- whitespace before ‘:’
- missing whitespace around operator
- function name should be lowercase
- class names should use CapWords convention
- fix various misspelling

One-line docstring should not occupy 3 lines
Expected 1 blank line *before* class docstring
First line should end with '.'
Blank line missing between one-line summary and description
No blank lines allowed *after* method docstring
Use r""" if any backslashes in a docstring

Use CapWords convention for class names
Use new-style classes
Use lowercase with underscore for function and local variable names
(to be continued)

the system

Remove unused variables
No whitespace inside parentheses
Add missing whitespace around arithmetic operator
Fix indentation
Remove trailing whitespaces

- remove obsolete code
- glances_password: update comments and fix typos
- re-apply fix to avoid string format conflicts (screwed up after
  feature branch merges)
- strip trailing whitespaces
- flake8

Add args visibility to the plugins to handle with the SNMP server properties (address, community...)